Automatic steam-heating system.



PATENTED SEPT. 1, 1908.

F. GROTE. AUTOMATIC STEAM HEATING $YSTEM.

APPLIOATION FILED D50. 2, 1907.

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FERDINAND GROTE, OF EVANSVILLE, INDIANA.

AUTOMATIC STEAM-EATING SYSTEM.

Specification of Letters Patent.

Patented Sept. 1, 1908.

Application filed December 2, 1907. Serial No. 404,651.

To all whom it may concern:

Be it known that I, FERDINAND GRo'rE, a citizen of the United States,residing at Evansville, in the county of Vanderburg and State ofIndiana, have invented certain new and useful Improvements in AutomaticSteam-Heating ystems, of which the following is a specification;

My invention relates to an automatic steam heating system, and consistsin the construction and arrangement of the several parts, which will behereinafter fully described, illustrated in the drawings, andparticularly pointed out in the claims.

The object of my invention is to provide a steam heating system forhouses and buildings, whichwill beautomatic in action, and simpler andcheaper to construct and operate than any system heretofore invented andused, and hence more durable and reliable than other heating systems.

My invention is illustrated in the accom? panying diagrammatic drawing,forming a part of my application.

On this drawing, A represents the steam generator, and B, the steam pipeleading from said generator to each of the radiators in the system bybranch pipes B, but re- ]turning to said generator below the .water .me.

C represents the main air pipe, leading from radiators D and connectedby branch pipes C from the radiators to the main air 1 e v P %ach of thebranch pipes B is provided with valves to regulate the flow of steam tothe radiators D. The branch pipes O are without valves, for reasonswhich will be hereinafter explained.

E is a steam tra s Q The pipes F, F, F are pipes which conduct-the watercondensed in the pipes B and B and the radiators D, which flows back inthe pipe B to the generator A below the water line.

The operation of my heating system is as follows:The steam produced ingenerator A, flows up and out through pipe B, and

branch pipes B, to and into radiators D, forcing the air out of saidradiators, in turn,

and driving said air through the branchv pipes C into air pipe 0.

The air, on its return through pipe 0, enters radiator D, the last ofthe series of radiators, through 'et pump G, and is. driven throughsaidradiator by the steam from the pipe B. The effect of this pressure ofthe returning steam on the air in radiator D is to drive all of the airout of said radiator through pipe a, which leaves the radiator from amore elevated point than the other branch pipe to the steam when itbecomes heated by the steam, closes and thereby prevents the furtheringress of air to the system. The effect of this action causes the steamto flow uninterruptedly through the pipes and makes the systemautomatic. It is due to the fact that the steam and air are hot or inother words so warm as to expand the parts of the thermostat trap E,that said trapcloses, and so long as it is closed, that no air canenterthe heating system, and the jet pump will remain open. When oncestarted the system will produce hbt steam sufiicient to keep thethermostatic tra-p closed, and in this case, therefore, the

operation of the system is automatic, be-

trap E, which trap 2. In an automatic steam heating system,

the combination with a steam generator and a plurality of radiators, asteam supply pipe 7 from the upper portion of the generator andreturning to the generator near leading the base thereof,a main airpipe, valveless branch air pipes leading from the several radiators to acommon or main air pipe, a

thermostatic steam trap a jet 'urnp in the steam supply connection witht e last radiator in the system, said pump having its suction openingconnecte with the main air pipe, and an air pipe lead' g from the lastreceive the fluids after they have passed the 10 radiator to said steamtrap, substantially as jet pump, and be closed thereby,substandescribed. tially as described.

3. In an automatic steam heating system, In testimony whereof I aflix mysignature,

5 the combination with a heat distributing cirin presence of twowitnesses.

cuit including a series of radiators, an an ex- FERDINAND GROTEF haustpi e, a jet pump, in communication Witnesses: I v with sai air exhaustpipe and the last radia- ERNST H. RAHM,

tor of the series, of a thermostatic trap to WM. HARTMAN.

